From those isolated bass track on youtube I've noticed a lot of rock band bass players like geddy, trujillo, Jason newsted etc. use distortion. Why is that? does it make the bass more audible? Geddy said in an interview "A clean bass sound sometimes doesn't knit in the mix with the guitar....the right kind of distortion helps knit the over all sound together..." What is it about really? I don't get what "knit in the mix" is.